Levetidsforlengelser for oljeplattformer

Dato: 26-05-2021-27-05-2021 | Påmeldingsfrist: 21-05-2021

Aldring og levetidsforlengelser for offshore plattformer -
utfordringen i å kontrollere strukturell integritet
// Ageing and Life Extension of Offshore Structures -
The Challenge of Managing Structural Integrity

26 May : Part 1 Introduction to ageing and life extension for structures
27 May : Part 2 Further developments, fatigue and inspection planning for life extension
Venue: Quality Airport Hotel Stavanger


Description

Many platforms in the Oil and Gas industry have been in production for decades and are reaching the limit of their design life. As they are still used in oil and gas production there is a need for life extension.

This course in 2 Parts will provide a brief understanding of the key ageing issues affecting structures in late life and in life extension and the main problem areas in providing assurance for structural integrity in the life extension phase. This includes recognizing the ageing factors, the relevant regulations and standards such as PSA regulation & HSE Safety Case regulation 14, ISO 19902, ISO 19901-9, NORSOK N-005 and NORSOK N-006. Further, a brief introduction to the assessment of ageing structures, analysis of ageing structures and integrity management of ageing structures, including inspection and repair, will be presented.

Part 1 will cover an introduction to the subject in ageing and life extension
Part 2 will cover further developments, fatigue and inspection planning for life extension.

The course will be based on the book (included in the course fee!):
Ageing and Life extension of offshore structures, Wiley 2019. Authors: Ersdal, G., Sharp, J.V, Stacey, A. Including also separate presentations as pdf.

Lecturers

Gerhard Ersdal, John Sharp, Arne Fjeldstad and Ole Tom Vårdal

 

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Program 26 May: Part 1
Lecturers Gerhard Ersdal and John Sharp

09.00 Registration and coffe

09.15 Introduction to ageing and life extension
• Failure statistics of ageing structures
• Ageing changes
• Design life and life extension
• Drivers for life extension
• Installation demographics

10.00 Relevant regulations, codes and standards
• Historic development in codes and standards
• Present safety principle for structures
• Current codes and standards

10.45 Coffee

11.05 Ageing factors: changes and hazards to life extension
• Main changes and hazards for life extension
• Corrosion, fatigue, accidental damage, foundation issues, subsidence, extreme weather etc
• Non-physical and technological changes

12:15 Lunch

13.15 Assessment of ageing structures
• Procedures based on hazard identification, development of inspection strategy, evaluation of structural integrity

14.15 Analysis of ageing structures
• Assessment of ageing in Fatigue (FLS) and Strength (ULS and ALS)

15:00 Coffee

15.20 Managing structural integrity in the life extension phase
• Structural integrity management
• Inspection and Inspection planning
• Mitigation and repair (fatigue and corrosion protection)
• Performance of repaired structures
• Areas of difficulty: Un-inspectable components (piles), met-ocean data, subsidence, cathodic protection

16.15 Conclusions
• Major issues for a safe life extension of structures
• What improvements and R & D is needed?

16.30 Close day1
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Program 27 May: Part 2
Lecturers as noted below

08.30 Coffee

09.00 Introduction to Part 2 
• Failure statistics of ageing structures
• Why ageing structures fail
• Structural integrity management of ageing structures
• Follow-up of discussions from part 1
Ved Gerhard Ersdal and John Sharp

09.45 Inspection and repair of ageing structures 
• Typical structural failure types and their inspection and repair
• Un-inspectable items
• Concrete structures inspection and repair
Ved Gerhard Ersdal and John Sharp

10:45 Coffee

11.05 Fatigue analysis of ageing structures
• Special issues in fatigue analysis of ageing structures
• Probabilistic fatigue analysis and probabilistic inspection planning
Ved Arne Fjeldstad

12:00 Lunch

12:50 Advanced methods for strength assessment
• Issues related to more advanced methods for assessing the safety and robustness of ageing structures
• Non-linear analysis methods and probabilistic analysis methods
• Relation to codes and standards
Ved Arne Fjeldstad

13.50 Experience and inspection of ageing structures. Case Studies – MOU and Jackets
• Experience of ageing structures and the effect of the fabrication and modifications quality
• Inspection needs and inspection tools
• Typical results from inspection. Knowledge acquired through examination of more than 1000 fatigue cracks observed in North Sea offshore structures
• Maintenance of inspection data
• Competence requirement for inspection, repair and integrity engineering
Ved Ole Tom Vårdal

15.00 Coffee

15.20 Repair of structures. Case Study
Repair of findings (crack, corrosion, dents, buckling) :
• Jacket structures
• Semi-Submersibles
• FPSO’s
Ved Arne Fjeldstad

16.20 Summary and conclusions
• How to manage the integrity of ageing structures (and marine systems)
• How to manage non-physical ageing
• Basis for a safe life extension of structures; what improvements and R&D is needed?
Ved Gerhard Ersdal and John Sharp

16.30 Close of day 2

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Praktiske opplysninger

Tid: Onsdag 26. mai og torsdag 27. mai 2021

Sted: Stavanger, Quality Airport Hotel Stavanger

Deltageravgift: (inkl. lunsj og 2 kaffepauser)
kr. 5.900 per kursdag, for medlemmer i Norsk Forening for Stålkonstruksjoner og Norsk Stålforbund
kr. 6.900 per kursdag, for ikke-medlemmer

Kursene kan tas hver for seg eller samlet:
For deltakelse på begge kursdager får man 10% rabatt på begge kurs.
Det gis ytterligere 10% rabatt dersom man melder på 3 personer fra samme firma.

For medlemmer blir da prisen:
kr. 4.720 per kursdag (min. 3 påmeldte og 2 dagers kurs)
Og for ikke-medlemmer blir prisen:
kr. 5.520 per kursdag (min. 3 påmeldte og 2 dagers kurs)

For søknad om medlemskap, send epost til: post@stalforbund.com

Hotell: Den enkelte må selv bestille hotellrom

Dokumenter:
Kurset inkluderer kurspresentasjoner som pdf + boka Ageing and Life extension of offshore structures

Administrasjon:
Norsk Stålforbund NFS sekretariat post@stalforbund.com Tel. 41 02 15 98

Påmeldingsfrist:  Fredag 21. mai - kl. 16.00

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